CY7C9335
SMPTE-259M/DVB-ASI
Descrambler/Framer-Controller
The inputs of the CY7C9335 are designed to be directly mated
to a CY7B9334 HOTLink receiver, which converts the
SMPTE-259M compatible high-speed serial data stream into
10-bit parallel characters.
Features
Fully compatible with SMPTE-259M
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— SMPTE-125M compliant for 4:2:2 component video
— SMPTE-244M compliant for 4fsc composite video
Fully compatible with DVB-ASI
Operates from a single +5V or 5V supply
100-pin TQFP package
This device performs both TRS (sync) detection and framing,
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data descrambling with the SMPTE-259M X + X + 1 algo-
rithm, and NRZI-to-NRZ decoding. These functions operate at
any character rate from 16 to 40 MHz. For those systems op-
erating with non-SMPTE-259M compliant video streams (or for
diagnostic purposes), the descrambler and NRZI decoding
functions can be disabled.
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Decodes 10-bitparallel digital streams for any rate from
16 40 M characters/sec (160 400 Mbits/sec serial)
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Operates with CY7B9334 SMPTE HOTLink™ deserializ-
er/receiver
X + X + 1 descrambler and NRZI-to-NRZ decoder may
be bypassed for raw data output
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DVB-ASI Operation
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The CY7C9335 also contains the necessary multiplexers, con-
trol inputs and outputs, to control a DVB-ASI compliant video
stream. DVB-ASI operation is enabled through activation of a
single input signal. This allows a single serial-to-parallel input
port to support both SMPTE and DVB data streams under soft-
ware or hardware control.
Functional Description
SMPTE-259M Operation
The CY7C9335 is a CMOS integrated circuit designed to de-
code SMPTE-125M and SMPTE-244M bit-parallel digital char-
acters (or other data formats) using the SMPTE-259M decod-
ing rules. Following decoding, the characters are framed by
locating the 30-bit TRS pattern in the parallel character
stream. The framed characters are then output.
In DVB-ASI mode the CY7C9335 automatically enables both
the 8B/10B decoder and multi-byte framer present in the
CY7B9334 receiver/deserializer. All error detection, fill, and
command codes are detected and output by the CY7C9335.
The CY7C9335 operates from a single +5V or −5V supply. It is
available in a 100-pin TQFP space saving package.
Logic Block Diagram
D9(RVS)
R F
D8
D7
D6
A/B
P D9(SVS)
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10
PD8
D5
P D7
10
10
11
10
D4
P D6
D3
D2
P D5
P D4
4
D1
P D3
D0(SC/D)
P D2
PD1
PD0(SC/D)
SYNC_EN
BYPASS
DVB_EN
H _ S Y N C
S Y N C _ E R R
CKR
O E
HOTLink is a trademark of Cypress Semiconductor Corporation.
Cypress Semiconductor Corporation
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3901 North First Street
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San Jose
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CA 95134
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408-943-2600
March 19, 1999